Chemistry Which of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch lights, electric shavers, etc. ? Zinc and carbon Iron and cadmium Nickel and cadmium Lead peroxide and lead Zinc and carbon Iron and cadmium Nickel and cadmium Lead peroxide and lead ANSWER DOWNLOAD EXAMIANS APP
Chemistry The luster of a metal is due to its high density presence of free electrons its high polishing its chemical inertness its high density presence of free electrons its high polishing its chemical inertness ANSWER DOWNLOAD EXAMIANS APP
Chemistry Removal of carbon particles from air involves the principle of Filteration Electrophoresis Precipitation Sedimentation Filteration Electrophoresis Precipitation Sedimentation ANSWER DOWNLOAD EXAMIANS APP
Chemistry The highest volume of gases in lower atmosphere is comprised of Hydrogen Oxygen Carbon dioxide Nitrogen Hydrogen Oxygen Carbon dioxide Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chemical(s) most commonly used for cloud seeding or ‘artificial rainmaking’ is/are Sodium Chloride All listed here Dry ice or frozen carbon dioxide Silver Iodide Sodium Chloride All listed here Dry ice or frozen carbon dioxide Silver Iodide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Activated Charcoal is used to remove colouring matter from pure substances by Adsorption Bleaching Oxidation Reduction Adsorption Bleaching Oxidation Reduction ANSWER DOWNLOAD EXAMIANS APP
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